The Manning brothers had a great role model, but they learned to win with very different styles

What do football's royal brothers talk about during the NFL season? Peyton Manning, the record-breaking quarterback for the game's most dominant team, the Indianapolis Colts, avoids evangelism. "I kind of let him ask me any questions before I give him advice," says Peyton, 29, of his discussions with younger brother Eli, 24, the second-year quarterback for the New York Giants. "He's got his coaches, and he's learning from his experience. What are you going to tell somebody? 'Hey! This team is fast.' He knows that."

According to Eli, however, Peyton is not above espionage. "He's been asking a lot of questions,"...